Brake Caliper rotation play

**triple_B** · #1: 03-25-2013, 10:38 PM

Hey all,
in the below links you will find videos showing the rotational movement of my front drivers side stock caliper. I compressed the caliper cyclinders and put in old pads to create space to show extreme rotation.
with good pads and compressed cyclinder the caliper will still rotate a bit.
I am getting quite a bit of wobble and steering wheel gerk when on the track. the wobble worsens as a session progresse, as if heat buildup makes it worse.
any ideas? has the caliber warped/ stretched after two years of hard lapping days? or are the guide pins toast?

I use Cryo rotors and hawk DTC-70 pads. im a really late hard braker. my pads last a long time and ive never boiled fluid.
rotors get hot though. after a 20 min track session and a one lap cool down of 4 minutes the rotors can be 800*.

thanks for any info

2007 Legacy GT front caliper guide pin rotation top/inside - YouTube

2007 Legacy GT front caliper guide pin move and rotation - YouTube

**jamal** · #2: 03-25-2013, 11:43 PM

good thing the caliper only squeezes the pad. The bracket is what holds them in place.

I would consider new pins but it looks fine to me.

**triple_B** · #3: 03-25-2013, 11:52 PM

true it does squeeze but when caliper squeezes pads I was curious if/how it could be jolted around and create vibration...which I am feeling.
I change pads dozens of time a year (track pads) and over the last 20 years and I cant seem to recall that much play...but than again I cant recall being concerned.
just curious if other recall such play (lol).